Mercurial > hg > graal-jvmci-8
annotate src/share/vm/interpreter/templateInterpreter.cpp @ 24225:a2dbb6fcc923
Added tag jvmci-0.33 for changeset 3aed4cb813f4
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 18 Aug 2017 22:47:33 +0200 |
| parents | f13e777eb255 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 23614 | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "interpreter/interpreter.hpp" | |
| 27 #include "interpreter/interpreterGenerator.hpp" | |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "interpreter/templateTable.hpp" | |
| 0 | 30 |
| 31 #ifndef CC_INTERP | |
| 32 | |
| 33 # define __ _masm-> | |
| 34 | |
| 35 void TemplateInterpreter::initialize() { | |
| 36 if (_code != NULL) return; | |
| 37 // assertions | |
| 38 assert((int)Bytecodes::number_of_codes <= (int)DispatchTable::length, | |
| 39 "dispatch table too small"); | |
| 40 | |
| 41 AbstractInterpreter::initialize(); | |
| 42 | |
| 43 TemplateTable::initialize(); | |
| 44 | |
| 45 // generate interpreter | |
| 46 { ResourceMark rm; | |
| 47 TraceTime timer("Interpreter generation", TraceStartupTime); | |
| 48 int code_size = InterpreterCodeSize; | |
| 49 NOT_PRODUCT(code_size *= 4;) // debug uses extra interpreter code space | |
| 50 _code = new StubQueue(new InterpreterCodeletInterface, code_size, NULL, | |
| 51 "Interpreter"); | |
| 52 InterpreterGenerator g(_code); | |
| 53 if (PrintInterpreter) print(); | |
| 54 } | |
| 55 | |
| 56 // initialize dispatch table | |
| 57 _active_table = _normal_table; | |
| 58 } | |
| 59 | |
| 60 //------------------------------------------------------------------------------------------------------------------------ | |
| 61 // Implementation of EntryPoint | |
| 62 | |
| 63 EntryPoint::EntryPoint() { | |
| 23614 | 64 assert(number_of_states == 10, "check the code below"); |
| 0 | 65 _entry[btos] = NULL; |
| 23614 | 66 _entry[ztos] = NULL; |
| 0 | 67 _entry[ctos] = NULL; |
| 68 _entry[stos] = NULL; | |
| 69 _entry[atos] = NULL; | |
| 70 _entry[itos] = NULL; | |
| 71 _entry[ltos] = NULL; | |
| 72 _entry[ftos] = NULL; | |
| 73 _entry[dtos] = NULL; | |
| 74 _entry[vtos] = NULL; | |
| 75 } | |
| 76 | |
| 77 | |
| 23614 | 78 EntryPoint::EntryPoint(address bentry, address zentry, address centry, address sentry, address aentry, address ientry, address lentry, address fentry, address dentry, address ventry) { |
| 79 assert(number_of_states == 10, "check the code below"); | |
| 0 | 80 _entry[btos] = bentry; |
| 23614 | 81 _entry[ztos] = zentry; |
| 0 | 82 _entry[ctos] = centry; |
| 83 _entry[stos] = sentry; | |
| 84 _entry[atos] = aentry; | |
| 85 _entry[itos] = ientry; | |
| 86 _entry[ltos] = lentry; | |
| 87 _entry[ftos] = fentry; | |
| 88 _entry[dtos] = dentry; | |
| 89 _entry[vtos] = ventry; | |
| 90 } | |
| 91 | |
| 92 | |
| 93 void EntryPoint::set_entry(TosState state, address entry) { | |
| 94 assert(0 <= state && state < number_of_states, "state out of bounds"); | |
| 95 _entry[state] = entry; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 address EntryPoint::entry(TosState state) const { | |
| 100 assert(0 <= state && state < number_of_states, "state out of bounds"); | |
| 101 return _entry[state]; | |
| 102 } | |
| 103 | |
| 104 | |
| 105 void EntryPoint::print() { | |
| 106 tty->print("["); | |
| 107 for (int i = 0; i < number_of_states; i++) { | |
| 108 if (i > 0) tty->print(", "); | |
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109 tty->print(INTPTR_FORMAT, p2i(_entry[i])); |
| 0 | 110 } |
| 111 tty->print("]"); | |
| 112 } | |
| 113 | |
| 114 | |
| 115 bool EntryPoint::operator == (const EntryPoint& y) { | |
| 116 int i = number_of_states; | |
| 117 while (i-- > 0) { | |
| 118 if (_entry[i] != y._entry[i]) return false; | |
| 119 } | |
| 120 return true; | |
| 121 } | |
| 122 | |
| 123 | |
| 124 //------------------------------------------------------------------------------------------------------------------------ | |
| 125 // Implementation of DispatchTable | |
| 126 | |
| 127 EntryPoint DispatchTable::entry(int i) const { | |
| 128 assert(0 <= i && i < length, "index out of bounds"); | |
| 129 return | |
| 130 EntryPoint( | |
| 131 _table[btos][i], | |
| 23614 | 132 _table[ztos][i], |
| 0 | 133 _table[ctos][i], |
| 134 _table[stos][i], | |
| 135 _table[atos][i], | |
| 136 _table[itos][i], | |
| 137 _table[ltos][i], | |
| 138 _table[ftos][i], | |
| 139 _table[dtos][i], | |
| 140 _table[vtos][i] | |
| 141 ); | |
| 142 } | |
| 143 | |
| 144 | |
| 145 void DispatchTable::set_entry(int i, EntryPoint& entry) { | |
| 146 assert(0 <= i && i < length, "index out of bounds"); | |
| 23614 | 147 assert(number_of_states == 10, "check the code below"); |
| 0 | 148 _table[btos][i] = entry.entry(btos); |
| 23614 | 149 _table[ztos][i] = entry.entry(ztos); |
| 0 | 150 _table[ctos][i] = entry.entry(ctos); |
| 151 _table[stos][i] = entry.entry(stos); | |
| 152 _table[atos][i] = entry.entry(atos); | |
| 153 _table[itos][i] = entry.entry(itos); | |
| 154 _table[ltos][i] = entry.entry(ltos); | |
| 155 _table[ftos][i] = entry.entry(ftos); | |
| 156 _table[dtos][i] = entry.entry(dtos); | |
| 157 _table[vtos][i] = entry.entry(vtos); | |
| 158 } | |
| 159 | |
| 160 | |
| 161 bool DispatchTable::operator == (DispatchTable& y) { | |
| 162 int i = length; | |
| 163 while (i-- > 0) { | |
| 164 EntryPoint t = y.entry(i); // for compiler compatibility (BugId 4150096) | |
| 165 if (!(entry(i) == t)) return false; | |
| 166 } | |
| 167 return true; | |
| 168 } | |
| 169 | |
| 170 address TemplateInterpreter::_remove_activation_entry = NULL; | |
| 171 address TemplateInterpreter::_remove_activation_preserving_args_entry = NULL; | |
| 172 | |
| 173 | |
| 174 address TemplateInterpreter::_throw_ArrayIndexOutOfBoundsException_entry = NULL; | |
| 175 address TemplateInterpreter::_throw_ArrayStoreException_entry = NULL; | |
| 176 address TemplateInterpreter::_throw_ArithmeticException_entry = NULL; | |
| 177 address TemplateInterpreter::_throw_ClassCastException_entry = NULL; | |
| 178 address TemplateInterpreter::_throw_NullPointerException_entry = NULL; | |
| 179 address TemplateInterpreter::_throw_StackOverflowError_entry = NULL; | |
| 180 address TemplateInterpreter::_throw_exception_entry = NULL; | |
| 181 | |
| 182 #ifndef PRODUCT | |
| 183 EntryPoint TemplateInterpreter::_trace_code; | |
| 184 #endif // !PRODUCT | |
| 185 EntryPoint TemplateInterpreter::_return_entry[TemplateInterpreter::number_of_return_entries]; | |
| 186 EntryPoint TemplateInterpreter::_earlyret_entry; | |
| 187 EntryPoint TemplateInterpreter::_deopt_entry [TemplateInterpreter::number_of_deopt_entries ]; | |
| 188 EntryPoint TemplateInterpreter::_continuation_entry; | |
| 189 EntryPoint TemplateInterpreter::_safept_entry; | |
| 190 | |
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191 address TemplateInterpreter::_invoke_return_entry[TemplateInterpreter::number_of_return_addrs]; |
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192 address TemplateInterpreter::_invokeinterface_return_entry[TemplateInterpreter::number_of_return_addrs]; |
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193 address TemplateInterpreter::_invokedynamic_return_entry[TemplateInterpreter::number_of_return_addrs]; |
| 0 | 194 |
| 195 DispatchTable TemplateInterpreter::_active_table; | |
| 196 DispatchTable TemplateInterpreter::_normal_table; | |
| 197 DispatchTable TemplateInterpreter::_safept_table; | |
| 198 address TemplateInterpreter::_wentry_point[DispatchTable::length]; | |
| 199 | |
| 200 TemplateInterpreterGenerator::TemplateInterpreterGenerator(StubQueue* _code): AbstractInterpreterGenerator(_code) { | |
| 201 _unimplemented_bytecode = NULL; | |
| 202 _illegal_bytecode_sequence = NULL; | |
| 203 } | |
| 204 | |
| 205 static const BasicType types[Interpreter::number_of_result_handlers] = { | |
| 206 T_BOOLEAN, | |
| 207 T_CHAR , | |
| 208 T_BYTE , | |
| 209 T_SHORT , | |
| 210 T_INT , | |
| 211 T_LONG , | |
| 212 T_VOID , | |
| 213 T_FLOAT , | |
| 214 T_DOUBLE , | |
| 215 T_OBJECT | |
| 216 }; | |
| 217 | |
| 218 void TemplateInterpreterGenerator::generate_all() { | |
| 219 AbstractInterpreterGenerator::generate_all(); | |
| 220 | |
| 221 { CodeletMark cm(_masm, "error exits"); | |
| 222 _unimplemented_bytecode = generate_error_exit("unimplemented bytecode"); | |
| 223 _illegal_bytecode_sequence = generate_error_exit("illegal bytecode sequence - method not verified"); | |
| 224 } | |
| 225 | |
| 226 #ifndef PRODUCT | |
| 227 if (TraceBytecodes) { | |
| 228 CodeletMark cm(_masm, "bytecode tracing support"); | |
| 229 Interpreter::_trace_code = | |
| 230 EntryPoint( | |
| 231 generate_trace_code(btos), | |
| 23614 | 232 generate_trace_code(ztos), |
| 0 | 233 generate_trace_code(ctos), |
| 234 generate_trace_code(stos), | |
| 235 generate_trace_code(atos), | |
| 236 generate_trace_code(itos), | |
| 237 generate_trace_code(ltos), | |
| 238 generate_trace_code(ftos), | |
| 239 generate_trace_code(dtos), | |
| 240 generate_trace_code(vtos) | |
| 241 ); | |
| 242 } | |
| 243 #endif // !PRODUCT | |
| 244 | |
| 245 { CodeletMark cm(_masm, "return entry points"); | |
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246 const int index_size = sizeof(u2); |
| 0 | 247 for (int i = 0; i < Interpreter::number_of_return_entries; i++) { |
| 248 Interpreter::_return_entry[i] = | |
| 249 EntryPoint( | |
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250 generate_return_entry_for(itos, i, index_size), |
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251 generate_return_entry_for(itos, i, index_size), |
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252 generate_return_entry_for(itos, i, index_size), |
| 23614 | 253 generate_return_entry_for(itos, i, index_size), |
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254 generate_return_entry_for(atos, i, index_size), |
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255 generate_return_entry_for(itos, i, index_size), |
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256 generate_return_entry_for(ltos, i, index_size), |
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257 generate_return_entry_for(ftos, i, index_size), |
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258 generate_return_entry_for(dtos, i, index_size), |
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259 generate_return_entry_for(vtos, i, index_size) |
| 0 | 260 ); |
| 261 } | |
| 262 } | |
| 263 | |
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264 { CodeletMark cm(_masm, "invoke return entry points"); |
| 23614 | 265 // These states are in order specified in TosState, except btos/ztos/ctos/stos are |
| 266 // really the same as itos since there is no top of stack optimization for these types | |
| 267 const TosState states[] = {itos, itos, itos, itos, itos, ltos, ftos, dtos, atos, vtos, ilgl}; | |
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268 const int invoke_length = Bytecodes::length_for(Bytecodes::_invokestatic); |
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269 const int invokeinterface_length = Bytecodes::length_for(Bytecodes::_invokeinterface); |
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270 const int invokedynamic_length = Bytecodes::length_for(Bytecodes::_invokedynamic); |
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271 |
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272 for (int i = 0; i < Interpreter::number_of_return_addrs; i++) { |
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273 TosState state = states[i]; |
| 23614 | 274 assert(state != ilgl, "states array is wrong above"); |
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275 Interpreter::_invoke_return_entry[i] = generate_return_entry_for(state, invoke_length, sizeof(u2)); |
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276 Interpreter::_invokeinterface_return_entry[i] = generate_return_entry_for(state, invokeinterface_length, sizeof(u2)); |
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277 Interpreter::_invokedynamic_return_entry[i] = generate_return_entry_for(state, invokedynamic_length, sizeof(u4)); |
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278 } |
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279 } |
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280 |
| 0 | 281 { CodeletMark cm(_masm, "earlyret entry points"); |
| 282 Interpreter::_earlyret_entry = | |
| 283 EntryPoint( | |
| 284 generate_earlyret_entry_for(btos), | |
| 23614 | 285 generate_earlyret_entry_for(ztos), |
| 0 | 286 generate_earlyret_entry_for(ctos), |
| 287 generate_earlyret_entry_for(stos), | |
| 288 generate_earlyret_entry_for(atos), | |
| 289 generate_earlyret_entry_for(itos), | |
| 290 generate_earlyret_entry_for(ltos), | |
| 291 generate_earlyret_entry_for(ftos), | |
| 292 generate_earlyret_entry_for(dtos), | |
| 293 generate_earlyret_entry_for(vtos) | |
| 294 ); | |
| 295 } | |
| 296 | |
| 297 { CodeletMark cm(_masm, "deoptimization entry points"); | |
| 298 for (int i = 0; i < Interpreter::number_of_deopt_entries; i++) { | |
| 299 Interpreter::_deopt_entry[i] = | |
| 300 EntryPoint( | |
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301 ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), |
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302 ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), |
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303 ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), |
| 23660 | 304 ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), |
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305 ((InterpreterGenerator*)this)->generate_deopt_entry_for(atos, i), |
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306 ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), |
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307 ((InterpreterGenerator*)this)->generate_deopt_entry_for(ltos, i), |
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308 ((InterpreterGenerator*)this)->generate_deopt_entry_for(ftos, i), |
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309 ((InterpreterGenerator*)this)->generate_deopt_entry_for(dtos, i), |
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310 ((InterpreterGenerator*)this)->generate_deopt_entry_for(vtos, i) |
| 0 | 311 ); |
| 312 } | |
| 313 } | |
| 314 | |
| 315 { CodeletMark cm(_masm, "result handlers for native calls"); | |
| 316 // The various result converter stublets. | |
| 317 int is_generated[Interpreter::number_of_result_handlers]; | |
| 318 memset(is_generated, 0, sizeof(is_generated)); | |
| 319 | |
| 320 for (int i = 0; i < Interpreter::number_of_result_handlers; i++) { | |
| 321 BasicType type = types[i]; | |
| 322 if (!is_generated[Interpreter::BasicType_as_index(type)]++) { | |
| 323 Interpreter::_native_abi_to_tosca[Interpreter::BasicType_as_index(type)] = generate_result_handler_for(type); | |
| 324 } | |
| 325 } | |
| 326 } | |
| 327 | |
| 328 { CodeletMark cm(_masm, "continuation entry points"); | |
| 329 Interpreter::_continuation_entry = | |
| 330 EntryPoint( | |
| 331 generate_continuation_for(btos), | |
| 23614 | 332 generate_continuation_for(ztos), |
| 0 | 333 generate_continuation_for(ctos), |
| 334 generate_continuation_for(stos), | |
| 335 generate_continuation_for(atos), | |
| 336 generate_continuation_for(itos), | |
| 337 generate_continuation_for(ltos), | |
| 338 generate_continuation_for(ftos), | |
| 339 generate_continuation_for(dtos), | |
| 340 generate_continuation_for(vtos) | |
| 341 ); | |
| 342 } | |
| 343 | |
| 344 { CodeletMark cm(_masm, "safepoint entry points"); | |
| 345 Interpreter::_safept_entry = | |
| 346 EntryPoint( | |
| 347 generate_safept_entry_for(btos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 23614 | 348 generate_safept_entry_for(ztos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), |
| 0 | 349 generate_safept_entry_for(ctos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), |
| 350 generate_safept_entry_for(stos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 351 generate_safept_entry_for(atos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 352 generate_safept_entry_for(itos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 353 generate_safept_entry_for(ltos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 354 generate_safept_entry_for(ftos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 355 generate_safept_entry_for(dtos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), | |
| 356 generate_safept_entry_for(vtos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)) | |
| 357 ); | |
| 358 } | |
| 359 | |
| 360 { CodeletMark cm(_masm, "exception handling"); | |
| 361 // (Note: this is not safepoint safe because thread may return to compiled code) | |
| 362 generate_throw_exception(); | |
| 363 } | |
| 364 | |
| 365 { CodeletMark cm(_masm, "throw exception entrypoints"); | |
| 366 Interpreter::_throw_ArrayIndexOutOfBoundsException_entry = generate_ArrayIndexOutOfBounds_handler("java/lang/ArrayIndexOutOfBoundsException"); | |
| 367 Interpreter::_throw_ArrayStoreException_entry = generate_klass_exception_handler("java/lang/ArrayStoreException" ); | |
| 368 Interpreter::_throw_ArithmeticException_entry = generate_exception_handler("java/lang/ArithmeticException" , "/ by zero"); | |
| 369 Interpreter::_throw_ClassCastException_entry = generate_ClassCastException_handler(); | |
| 370 Interpreter::_throw_NullPointerException_entry = generate_exception_handler("java/lang/NullPointerException" , NULL ); | |
| 371 Interpreter::_throw_StackOverflowError_entry = generate_StackOverflowError_handler(); | |
| 372 } | |
| 373 | |
| 374 | |
| 375 | |
| 376 #define method_entry(kind) \ | |
| 377 { CodeletMark cm(_masm, "method entry point (kind = " #kind ")"); \ | |
| 378 Interpreter::_entry_table[Interpreter::kind] = generate_method_entry(Interpreter::kind); \ | |
| 379 } | |
| 380 | |
| 381 // all non-native method kinds | |
| 382 method_entry(zerolocals) | |
| 383 method_entry(zerolocals_synchronized) | |
| 384 method_entry(empty) | |
| 385 method_entry(accessor) | |
| 386 method_entry(abstract) | |
| 387 method_entry(java_lang_math_sin ) | |
| 388 method_entry(java_lang_math_cos ) | |
| 389 method_entry(java_lang_math_tan ) | |
| 390 method_entry(java_lang_math_abs ) | |
| 391 method_entry(java_lang_math_sqrt ) | |
| 392 method_entry(java_lang_math_log ) | |
| 393 method_entry(java_lang_math_log10) | |
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394 method_entry(java_lang_math_exp ) |
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395 method_entry(java_lang_math_pow ) |
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396 method_entry(java_lang_ref_reference_get) |
| 0 | 397 |
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398 if (UseCRC32Intrinsics) { |
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399 method_entry(java_util_zip_CRC32_update) |
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400 method_entry(java_util_zip_CRC32_updateBytes) |
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401 method_entry(java_util_zip_CRC32_updateByteBuffer) |
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402 } |
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403 |
| 6926 | 404 initialize_method_handle_entries(); |
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405 |
| 0 | 406 // all native method kinds (must be one contiguous block) |
| 407 Interpreter::_native_entry_begin = Interpreter::code()->code_end(); | |
| 408 method_entry(native) | |
| 409 method_entry(native_synchronized) | |
| 410 Interpreter::_native_entry_end = Interpreter::code()->code_end(); | |
| 411 | |
| 412 #undef method_entry | |
| 413 | |
| 414 // Bytecodes | |
| 415 set_entry_points_for_all_bytes(); | |
| 416 set_safepoints_for_all_bytes(); | |
| 417 } | |
| 418 | |
| 419 //------------------------------------------------------------------------------------------------------------------------ | |
| 420 | |
| 421 address TemplateInterpreterGenerator::generate_error_exit(const char* msg) { | |
| 422 address entry = __ pc(); | |
| 423 __ stop(msg); | |
| 424 return entry; | |
| 425 } | |
| 426 | |
| 427 | |
| 428 //------------------------------------------------------------------------------------------------------------------------ | |
| 429 | |
| 430 void TemplateInterpreterGenerator::set_entry_points_for_all_bytes() { | |
| 431 for (int i = 0; i < DispatchTable::length; i++) { | |
| 432 Bytecodes::Code code = (Bytecodes::Code)i; | |
| 433 if (Bytecodes::is_defined(code)) { | |
| 434 set_entry_points(code); | |
| 435 } else { | |
| 436 set_unimplemented(i); | |
| 437 } | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 | |
| 442 void TemplateInterpreterGenerator::set_safepoints_for_all_bytes() { | |
| 443 for (int i = 0; i < DispatchTable::length; i++) { | |
| 444 Bytecodes::Code code = (Bytecodes::Code)i; | |
| 445 if (Bytecodes::is_defined(code)) Interpreter::_safept_table.set_entry(code, Interpreter::_safept_entry); | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 | |
| 450 void TemplateInterpreterGenerator::set_unimplemented(int i) { | |
| 451 address e = _unimplemented_bytecode; | |
| 23614 | 452 EntryPoint entry(e, e, e, e, e, e, e, e, e, e); |
| 0 | 453 Interpreter::_normal_table.set_entry(i, entry); |
| 454 Interpreter::_wentry_point[i] = _unimplemented_bytecode; | |
| 455 } | |
| 456 | |
| 457 | |
| 458 void TemplateInterpreterGenerator::set_entry_points(Bytecodes::Code code) { | |
| 459 CodeletMark cm(_masm, Bytecodes::name(code), code); | |
| 460 // initialize entry points | |
| 461 assert(_unimplemented_bytecode != NULL, "should have been generated before"); | |
| 462 assert(_illegal_bytecode_sequence != NULL, "should have been generated before"); | |
| 463 address bep = _illegal_bytecode_sequence; | |
| 23614 | 464 address zep = _illegal_bytecode_sequence; |
| 0 | 465 address cep = _illegal_bytecode_sequence; |
| 466 address sep = _illegal_bytecode_sequence; | |
| 467 address aep = _illegal_bytecode_sequence; | |
| 468 address iep = _illegal_bytecode_sequence; | |
| 469 address lep = _illegal_bytecode_sequence; | |
| 470 address fep = _illegal_bytecode_sequence; | |
| 471 address dep = _illegal_bytecode_sequence; | |
| 472 address vep = _unimplemented_bytecode; | |
| 473 address wep = _unimplemented_bytecode; | |
| 474 // code for short & wide version of bytecode | |
| 475 if (Bytecodes::is_defined(code)) { | |
| 476 Template* t = TemplateTable::template_for(code); | |
| 477 assert(t->is_valid(), "just checking"); | |
| 478 set_short_entry_points(t, bep, cep, sep, aep, iep, lep, fep, dep, vep); | |
| 479 } | |
| 480 if (Bytecodes::wide_is_defined(code)) { | |
| 481 Template* t = TemplateTable::template_for_wide(code); | |
| 482 assert(t->is_valid(), "just checking"); | |
| 483 set_wide_entry_point(t, wep); | |
| 484 } | |
| 485 // set entry points | |
| 23614 | 486 EntryPoint entry(bep, zep, cep, sep, aep, iep, lep, fep, dep, vep); |
| 0 | 487 Interpreter::_normal_table.set_entry(code, entry); |
| 488 Interpreter::_wentry_point[code] = wep; | |
| 489 } | |
| 490 | |
| 491 | |
| 492 void TemplateInterpreterGenerator::set_wide_entry_point(Template* t, address& wep) { | |
| 493 assert(t->is_valid(), "template must exist"); | |
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494 assert(t->tos_in() == vtos, "only vtos tos_in supported for wide instructions"); |
| 0 | 495 wep = __ pc(); generate_and_dispatch(t); |
| 496 } | |
| 497 | |
| 498 | |
| 499 void TemplateInterpreterGenerator::set_short_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { | |
| 500 assert(t->is_valid(), "template must exist"); | |
| 501 switch (t->tos_in()) { | |
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502 case btos: |
| 23614 | 503 case ztos: |
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504 case ctos: |
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505 case stos: |
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506 ShouldNotReachHere(); // btos/ctos/stos should use itos. |
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507 break; |
| 0 | 508 case atos: vep = __ pc(); __ pop(atos); aep = __ pc(); generate_and_dispatch(t); break; |
| 509 case itos: vep = __ pc(); __ pop(itos); iep = __ pc(); generate_and_dispatch(t); break; | |
| 510 case ltos: vep = __ pc(); __ pop(ltos); lep = __ pc(); generate_and_dispatch(t); break; | |
| 511 case ftos: vep = __ pc(); __ pop(ftos); fep = __ pc(); generate_and_dispatch(t); break; | |
| 512 case dtos: vep = __ pc(); __ pop(dtos); dep = __ pc(); generate_and_dispatch(t); break; | |
| 513 case vtos: set_vtos_entry_points(t, bep, cep, sep, aep, iep, lep, fep, dep, vep); break; | |
| 514 default : ShouldNotReachHere(); break; | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 | |
| 519 //------------------------------------------------------------------------------------------------------------------------ | |
| 520 | |
| 521 void TemplateInterpreterGenerator::generate_and_dispatch(Template* t, TosState tos_out) { | |
| 522 if (PrintBytecodeHistogram) histogram_bytecode(t); | |
| 523 #ifndef PRODUCT | |
| 524 // debugging code | |
| 525 if (CountBytecodes || TraceBytecodes || StopInterpreterAt > 0) count_bytecode(); | |
| 526 if (PrintBytecodePairHistogram) histogram_bytecode_pair(t); | |
| 527 if (TraceBytecodes) trace_bytecode(t); | |
| 528 if (StopInterpreterAt > 0) stop_interpreter_at(); | |
| 529 __ verify_FPU(1, t->tos_in()); | |
| 530 #endif // !PRODUCT | |
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531 int step = 0; |
| 0 | 532 if (!t->does_dispatch()) { |
| 533 step = t->is_wide() ? Bytecodes::wide_length_for(t->bytecode()) : Bytecodes::length_for(t->bytecode()); | |
| 534 if (tos_out == ilgl) tos_out = t->tos_out(); | |
| 535 // compute bytecode size | |
| 536 assert(step > 0, "just checkin'"); | |
| 537 // setup stuff for dispatching next bytecode | |
| 538 if (ProfileInterpreter && VerifyDataPointer | |
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539 && MethodData::bytecode_has_profile(t->bytecode())) { |
| 0 | 540 __ verify_method_data_pointer(); |
| 541 } | |
| 542 __ dispatch_prolog(tos_out, step); | |
| 543 } | |
| 544 // generate template | |
| 545 t->generate(_masm); | |
| 546 // advance | |
| 547 if (t->does_dispatch()) { | |
| 548 #ifdef ASSERT | |
| 549 // make sure execution doesn't go beyond this point if code is broken | |
| 550 __ should_not_reach_here(); | |
| 551 #endif // ASSERT | |
| 552 } else { | |
| 553 // dispatch to next bytecode | |
| 554 __ dispatch_epilog(tos_out, step); | |
| 555 } | |
| 556 } | |
| 557 | |
| 558 //------------------------------------------------------------------------------------------------------------------------ | |
| 559 // Entry points | |
| 560 | |
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561 /** |
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562 * Returns the return entry table for the given invoke bytecode. |
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563 */ |
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564 address* TemplateInterpreter::invoke_return_entry_table_for(Bytecodes::Code code) { |
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565 switch (code) { |
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566 case Bytecodes::_invokestatic: |
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567 case Bytecodes::_invokespecial: |
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568 case Bytecodes::_invokevirtual: |
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569 case Bytecodes::_invokehandle: |
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570 return Interpreter::invoke_return_entry_table(); |
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571 case Bytecodes::_invokeinterface: |
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572 return Interpreter::invokeinterface_return_entry_table(); |
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573 case Bytecodes::_invokedynamic: |
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574 return Interpreter::invokedynamic_return_entry_table(); |
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575 default: |
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576 fatal(err_msg("invalid bytecode: %s", Bytecodes::name(code))); |
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577 return NULL; |
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578 } |
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579 } |
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580 |
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581 /** |
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582 * Returns the return entry address for the given top-of-stack state and bytecode. |
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583 */ |
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584 address TemplateInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) { |
| 0 | 585 guarantee(0 <= length && length < Interpreter::number_of_return_entries, "illegal length"); |
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586 const int index = TosState_as_index(state); |
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587 switch (code) { |
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588 case Bytecodes::_invokestatic: |
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589 case Bytecodes::_invokespecial: |
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590 case Bytecodes::_invokevirtual: |
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591 case Bytecodes::_invokehandle: |
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592 return _invoke_return_entry[index]; |
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593 case Bytecodes::_invokeinterface: |
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594 return _invokeinterface_return_entry[index]; |
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595 case Bytecodes::_invokedynamic: |
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596 return _invokedynamic_return_entry[index]; |
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597 default: |
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598 assert(!Bytecodes::is_invoke(code), err_msg("invoke instructions should be handled separately: %s", Bytecodes::name(code))); |
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599 return _return_entry[length].entry(state); |
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600 } |
| 0 | 601 } |
| 602 | |
| 603 | |
| 604 address TemplateInterpreter::deopt_entry(TosState state, int length) { | |
| 605 guarantee(0 <= length && length < Interpreter::number_of_deopt_entries, "illegal length"); | |
| 606 return _deopt_entry[length].entry(state); | |
| 607 } | |
| 608 | |
| 609 //------------------------------------------------------------------------------------------------------------------------ | |
| 610 // Suport for invokes | |
| 611 | |
| 612 int TemplateInterpreter::TosState_as_index(TosState state) { | |
| 613 assert( state < number_of_states , "Invalid state in TosState_as_index"); | |
| 614 assert(0 <= (int)state && (int)state < TemplateInterpreter::number_of_return_addrs, "index out of bounds"); | |
| 615 return (int)state; | |
| 616 } | |
| 617 | |
| 618 | |
| 619 //------------------------------------------------------------------------------------------------------------------------ | |
| 620 // Safepoint suppport | |
| 621 | |
| 622 static inline void copy_table(address* from, address* to, int size) { | |
| 623 // Copy non-overlapping tables. The copy has to occur word wise for MT safety. | |
| 624 while (size-- > 0) *to++ = *from++; | |
| 625 } | |
| 626 | |
| 627 void TemplateInterpreter::notice_safepoints() { | |
| 628 if (!_notice_safepoints) { | |
| 629 // switch to safepoint dispatch table | |
| 630 _notice_safepoints = true; | |
| 631 copy_table((address*)&_safept_table, (address*)&_active_table, sizeof(_active_table) / sizeof(address)); | |
| 632 } | |
| 633 } | |
| 634 | |
| 635 // switch from the dispatch table which notices safepoints back to the | |
| 636 // normal dispatch table. So that we can notice single stepping points, | |
| 637 // keep the safepoint dispatch table if we are single stepping in JVMTI. | |
| 638 // Note that the should_post_single_step test is exactly as fast as the | |
| 639 // JvmtiExport::_enabled test and covers both cases. | |
| 640 void TemplateInterpreter::ignore_safepoints() { | |
| 641 if (_notice_safepoints) { | |
| 642 if (!JvmtiExport::should_post_single_step()) { | |
| 643 // switch to normal dispatch table | |
| 644 _notice_safepoints = false; | |
| 645 copy_table((address*)&_normal_table, (address*)&_active_table, sizeof(_active_table) / sizeof(address)); | |
| 646 } | |
| 647 } | |
| 648 } | |
| 649 | |
|
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650 //------------------------------------------------------------------------------------------------------------------------ |
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651 // Deoptimization support |
| 0 | 652 |
|
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653 // If deoptimization happens, this function returns the point of next bytecode to continue execution |
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654 address TemplateInterpreter::deopt_continue_after_entry(Method* method, address bcp, int callee_parameters, bool is_top_frame) { |
|
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655 return AbstractInterpreter::deopt_continue_after_entry(method, bcp, callee_parameters, is_top_frame); |
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656 } |
| 0 | 657 |
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658 // If deoptimization happens, this function returns the point where the interpreter reexecutes |
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659 // the bytecode. |
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660 // Note: Bytecodes::_athrow (C1 only) and Bytecodes::_return are the special cases |
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661 // that do not return "Interpreter::deopt_entry(vtos, 0)" |
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662 address TemplateInterpreter::deopt_reexecute_entry(Method* method, address bcp) { |
| 0 | 663 assert(method->contains(bcp), "just checkin'"); |
| 2142 | 664 Bytecodes::Code code = Bytecodes::java_code_at(method, bcp); |
| 0 | 665 if (code == Bytecodes::_return) { |
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666 // This is used for deopt during registration of finalizers |
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667 // during Object.<init>. We simply need to resume execution at |
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668 // the standard return vtos bytecode to pop the frame normally. |
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669 // reexecuting the real bytecode would cause double registration |
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670 // of the finalizable object. |
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671 return _normal_table.entry(Bytecodes::_return).entry(vtos); |
| 0 | 672 } else { |
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673 return AbstractInterpreter::deopt_reexecute_entry(method, bcp); |
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674 } |
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675 } |
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676 |
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677 // If deoptimization happens, the interpreter should reexecute this bytecode. |
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678 // This function mainly helps the compilers to set up the reexecute bit. |
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679 bool TemplateInterpreter::bytecode_should_reexecute(Bytecodes::Code code) { |
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680 if (code == Bytecodes::_return) { |
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681 //Yes, we consider Bytecodes::_return as a special case of reexecution |
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682 return true; |
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683 } else { |
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684 return AbstractInterpreter::bytecode_should_reexecute(code); |
| 0 | 685 } |
| 686 } | |
| 687 | |
| 688 #endif // !CC_INTERP |